Halogen Lamps

Halogen Lamps

Halogen lamps are incandescent lamps with tungsten filaments but in addition, have their ageement envelopes filled with an inert gas and a halogen. This halogen could be whether bromine or iodine and the intention in halogenated is to increase the bulb's life cycle. Halogen bulbs have higher efficacy and produce higher color climatic characteristic than non-halogen incandescent bulbs.

The force of a halogen bulb over other incandescent bulbs is that the halogen in the bulb's casing helps to keep the bulb clean as in other bulbs the tungsten is deposited on the bulb. With a halogen bulb, a chemical reaction helps to make the tungsten evaporate. This not only keeps the bulb clean but also ensures that the light yield remains approximately constant throughout a bulb's life.

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The first halogen lamps to be used commercially were called Quartz Iodine Lamps as they used iodine as a halogen. Later lamps were made using bromine as a halogen. Because their exterior is closer to the filament, halogen lamps get hotter than other incandescent lamps. These lamps also control at higher temperatures and pose fire and burning risks.

For this reason, halogen lamps need some protection precautions. This includes the use of grilles to protect the bulb and in some cases the use of halogen bulbs over a definite voltage is prohibited in residential areas.

Some precautions need to be observed in handling halogen lamps. Any exterior contamination, notably fingerprints, can damage the quartz envelope when it is heated. Contaminants will generate a hot spot on the bulb exterior when the light is put on.

Halogen Lamps

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